UNAUTHORISED LOAN CREDITED TO ACCOUNT

I received an sms this morning, Thursday 29th October 2015 notifying me that my Nedbank account was credited with an amount of R500 FROM BRUMA FINANCE. HOW THE **** DO THEY GET BANK DETAILS AND HOW ***ING DARE THEY APPROVE A LOAN AMOUNT WITHOUT MY CONSENT. I DIDN'T APPLY FOR A FUNKING LOAN IN THE FIRST PLACE AND HOW DARE THEY DO THIS.